On Dec 30, 2024, at 19:43, n6lrv@... via groups.io <n6lrv@...> wrote:



Yes, it just unscrews. Motorola used to sell both mini UHF and BNC replacements but dropped the BNC option years ago. They were made by Amphenol but begging and pleading to buy them direct fell on deaf ears. Last I checked the mini UHF replacements where still available but that's was in 2022. The part number is shown in the BSM.

Gary

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From: repeater-builder@groups.io <repeater-builder@groups.io> on behalf of Teton Amateur Radio Repeater Association (TARRA) <tarra@...>
Sent: Monday, December 30, 2024 4:29 PM
To: Repeater-Builder <repeater-builder@groups.io>
Subject: [repeater-builder] Motorola CM300 Antenna Connector

 

Hello Group,

I'm looking for help to change a Motorola CM300 antenna connector. I
would appreciate knowing how to do it. Seems like it just unscrews, but
not brave enough to trying it without knowing.

Mick - W7CAT

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Untitled Document

Yes they unscrew. The other side is a SMA, or something very close.
Look on e-bay for BNC replacements, try searching for CM300 and you

Milt
N3LTQ



On Dec 30, 2024, at 19:43, n6lrv@... via groups.io wrote:

?
Yes, it just unscrews. Motorola used to sell both mini UHF and BNC

Gary
From: repeater-builder@groups.io on behalf of Teton Amateur Radio

Sent: Monday, December 30, 2024 4:29 PM
To: Repeater-Builder
Subject: [repeater-builder] Motorola CM300 Antenna Connector
Hello Group,

I'm looking for help to change a Motorola CM300 antenna connector. I
would appreciate knowing how to do it. Seems like it just unscrews, but
not brave enough to trying it without knowing.

Mick - W7CAT

--
Untitled Document

On Dec 31, 2024, at 00:12, Teton Amateur Radio Repeater Association (TARRA) <tarra@...> wrote:

Yes, I have seen them on eBay. I just wasn't sure if something needed to be held on the inside of the radio while they were unscrewed. A while back I bought three CM300 radios. The seller thought the BNC connectors were a modification. A little research at that time showed the BNC option. One of the BNC connectors is a little bent and I want to replace it. I also just got a radio to give to someone else. It will be better to make it a BNC instead of having to make an adapter cable for him. Over all, I prefer the BNC. To be able to change the connector on the radio seems like one of Motorola's better ideas.

Also, for anyone wanting to use a radio with a Raspberry Pi for something, the CM300 uses 3.1 VDC on the COR & PTT lines. Makes for an easy interface!

Mick - W7CAT


----- Original Message -----
From: "Milton Engle via groups.io"
To: repeater-builder@groups.io
Sent: Monday, December 30, 2024 09:52:24 PM
Subject: Re: [repeater-builder] Motorola CM300 Antenna Connector

Yes they unscrew. The other side is a SMA, or something very close.
Look on e-bay for BNC replacements, try searching for CM300 and you should find them. The Mini-UHF version is of course available thru Mother M.

Milt
N3LTQ



On Dec 30, 2024, at 19:43, n6lrv@... via groups.io wrote:

?
Yes, it just unscrews. Motorola used to sell both mini UHF and BNC replacements but dropped the BNC option years ago. They were made by Amphenol but begging and pleading to buy them direct fell on deaf ears. Last I checked the mini UHF replacements where still available but that's was in 2022. The part number is shown in the BSM.

Gary
From: repeater-builder@groups.io on behalf of Teton Amateur Radio Repeater Association (TARRA)
Sent: Monday, December 30, 2024 4:29 PM
To: Repeater-Builder
Subject: [repeater-builder] Motorola CM300 Antenna Connector
Hello Group,

I'm looking for help to change a Motorola CM300 antenna connector. I
would appreciate knowing how to do it. Seems like it just unscrews, but
not brave enough to trying it without knowing.

Mick - W7CAT

--
Untitled Document

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Untitled Document